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Pfizer vaccine recipients have lower neutralizing antibodies targeting delta variant up to three months after first dose. Outcome data needed to determine if this translates into less efficacy. Study concludes second dose interval needs to be shortened.
Medical Mythbusting Commentary for June 4, 2021 Source:Pfizer vaccine recipients have lower antibodies targeting Indian variant – studyPfizer-BioNTech vaccine recipients have lower antibody levels targeting the Delta variant Reference:Neutralising antibody activity against SARS-CoV-2 VOCs B.1.617.2 and B.1.351 by BNT162b2 vaccination
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Study concludes that there was no evidence to support vitamin D supplementation in the general population would improve COVID-19 outcomes.
Medical Mythbusting Commentary for June 3, 2021 Source:High levels of vitamin D may not protect against COVID-19, study suggests Reference:Vitamin D and COVID-19 susceptibility and severity in the COVID-19 Host Genetics Initiative: A Mendelian randomization study
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NACI recommends second dose Pfizer/moderna vaccine for those who had AZ as their first dose.
Medical Mythbusting Commentary for June 2, 2021 Source:National vaccine panel allows for mixing and matching COVID-19 vaccines Reference:An Advisory Committee Statement (ACS) National Advisory Committee on Immunization (NACI)
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B.1.617 variant adds new wrinkle into decision about whether to reopen schools in Ontario.
Medical Mythbusting Commentary for June 1, 2021 Source:Doug Ford promises announcement on whether schools will reopen ‘in a day or two’ Reference:
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With all that has happened with miscommunication and damage to confidence, if you want to make people suspicious of your decision Health Canada, this is the way to do it.
Medical Mythbusting Commentary for May 29, 2021 Source:Health Canada extends the expiry date of the AstraZeneca vaccine. It would be helpful if they released all the data to help health care providers explain the rationale to the public.
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Sunday House Call, #792 , May 30, 2021: The Best Before Date
Health Canada extends the expiry date of the AstraZeneca vaccine. It would be helpful if they released all the data to help health care providers explain the rationale to the public. Mandating that the job prerequisite for health care providers with direct contact with patients especially those who are vulnerable, be vaccinated, in this case…
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B.1.617 variant grew nearly six-fold in Ontario last week. Although small numbers, we have seen this movie before. Data suggests single vaccine dose doesn’t provide adequate protection. Be proactive; speed up second dose now where indicated.
Medical Mythbusting Commentary for May 28, 2021 Source:Cases of B.1.617 coronavirus variant in Ontario grew nearly six-fold last week: officials
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German study proposes a mechanism behind the rare blood clots associated with AstraZeneca vaccine.
Medical Mythbusting Commentary for May 27, 2021 Source:German scientists say they can help improve Covid vaccines to prevent blood clots Reference:“Vaccine-Induced Covid-19 Mimicry” Syndrome: Splice reactions within the SARS-CoV-2 Spike open reading frame result in Spike protein variants that may cause thromboembolic events in patients immunized with vector-based vaccines
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Concerns in the UK that the spread of the new variant from India within certain regions in the country poses a threat to those who have had only the first vaccine dose.
Medical Mythbusting Commentary for May 26, 2021 Source:New Variant Posing Threat, as Global Vaccine Drive FaltersOntario’s top doctor would like to see daily COVID-19 case counts dip below 600 before reopening begins
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